Beam combiner for combining two independently scanned illuminating beams of a light scanning microscope

US9599803B2 · kind B2 · utility

Assignee

• Carl Zeiss Microscopy GmbH · DE

Inventors

• Gerhard Krampert · Jena, DE
• Michel Stutz · Munich, DE

Key dates

• Filing date: Jun 8, 2012
• Grant date: Mar 21, 2017
• Expiry date: Apr 27, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B27/143
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A beam combiner in a light scanning microscope for combining two illuminating beams that can be independently scanned. A first beam path (B1) guides a first illuminating beam (2) along a first optical axis (OA1) and a first optical device (L1) bundles the first beam (2) in an intermediate image plane. A second beam path (B2) guides a second illuminating beam (3) along a second optical axis (OA2) that intersects the first optical axis (OA1) at a point of intersection (Z) lying in or near the intermediate image plane, and a scanner (S2) for deflecting the second illuminating beam (3) and arranged before the point of intersection (Z) of the optical axes (OA1, OA2) in the propagation direction of the second illuminating beam (3). A coupling-in unit (4) is arranged at the point of intersection (Z) of the optical axes (OA1, OA2) and either has a mirror surface (5) having a passage opening (6; 7) at the point of incidence of the first optical axis (OA1), or is transparent except for a mirror element lying at the point of incidence of the first optical axis (OA1), wherein the size of the passage opening (6; 7) or the mirror element corresponds to the cross-section that the first illuminati…